This is an Oncidium Intergeneris Alliance Psy Mariposa Onc. Papilio x Onc. Kalihii 'Green Valley' , Butterfly Orchid . This has a one huge flower. It is called a continuous bloomer, because it keeps growing a new spike and flowering for years. You can see the new spike growing right behind the flower. Unsupported and up in the air this flower blows in the wind a will resemble a butterfly. This is the first flower from this plant. It also has some new growth coming in.
My, oh, my such a gorgeous bloom! My husband's drooling. I'll know what to look for next time I go orchid shopping.
Magnificent! My MIL has a couple orchids (she's in FL), but none like that. Thanks for sharing it's gorgeous!